82 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



there are some ovules present. A very few remains of echini, bryozoa, lamelli- 

 branchs and gastropods were observed, also Textulariain numbers, Amphistegina, 

 etc., among foraminifera. 



1,600 feet. — Color light brownish gray, with deep brown spots of limonite. 

 Trace of quartz sand. A sand- rock containing lumps of compact limestone, 

 as well as porous material not sand-rock. The determinable material was 

 mostly foraminifera of several genera. There were also a few bits of madre- 

 pore corals, echinus spines, and branching bryozoa. Many remains of lamelli- 

 branchs and a few casts of gastropods. One piece of Dentalium was observed. 



1,625 feet. — Color light brownish gray. The limpid quartz sand present 

 as a slight trace. Again a rather loosely compacted coarse sand-rock with 

 much very fine material in it. Contains some lumps of solid limestone and 

 alse porous rock. Foraminifera very numerous and well preserved, the coni- 

 cal Textularia being especially abundant. Bits of coral, spines and plates of 

 echini, and fragments of branching bryozoa are few. Pieces of lamellibranch 

 shells are scarce, and casts of gastropods are very rare. Noted an occasional 

 Dentalium. 



1,650 feet. — Color light brownish gray. Trace of the quartz sand. The 

 sample is very much like the last, with perhaps rather more chips of solid 

 limestone in it. As usual foraminifera form a very considerable portion of the 

 determinable remains. No bits of madrepore corals were noted. Spines and 

 plates of echini are not scarce ; some bryozoa are present •, lamellibranch and 

 gastropod remains are rare. 



1,675 feet. — Color light brownish gray. Trace of the quartz sand. Sam- 

 ple appears very much like the last, but with fewer bits of solid and porous 

 rock in it. It was mainly a sand-rock. Proportion of determinable remains 

 smaller, perhaps, than in the last. Foraminifera of the usual genera abound ; 

 spines of echini are not rare ; bryozoa, lamellibranchs, and gastropods occur 

 very sparingly. 



1,700 feet. — Color light brownish gray. Quartz sand rather more abun- 

 dant than in the last three samples. The sample contains almost no angular 

 fragments, and seems originally to have been a fine sand-rock. A few ovules \ 

 The proportion of determinable remains is very small. Foraminifera (Textu- 

 laria, Orbitolites, etc.) are most numerous among them. Some spines of 

 echini and bits of branching bryozoa were noted. Lamellibranch remains are 

 unusually scarce and gastropods seem to be absent. 



1,725 feet. — Color light brownish gray. A very small amount of the ex- 

 tremely fine quartz sand, in which is an occasional larger and more rounded 

 grain. The rock seems to have been a moderately coarse sand-rock with much 

 fine material in it, and the grains were rounded. A few ovules (?) were noted. 

 Foraminifera of apparently the same genera as heretofore abound. Some 

 fragments are doubtfully referred to coral. Spines of echini are comparatively 

 numerous, and so too are branching bryozoa. Lamellibranchs are scarce and 

 gastropods seem to be absent. 



1,750 feet. — Color light brownish gray. Slight trace of quartz sand. This 





